// ==UserScript==
// @name         New Userscript
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://www.baidu.com/
// @icon         
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    let div=document.createElement("div");
    div.innerHTML=`<span>
<table border="1" id='wqw'>
    <tr>
        <td>aaa</td>
        <td>aaa</td>
    </tr>
	<tr>
        <td>bbb</td>
        <td>bbb</td>
    </tr>
</table>
</span>`;

    let share=document.getElementById('form');
    console.log(share)
    //document.body.appendChild(div);
    document.body.insertBefore(div, document.body.childNodes[0]);
    // Your code here...
})();